Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bd9542f670343f6…

MALICIOUS

PDF

134.6 KB Created: 2021-07-03 12:09:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 109d5c60e48ef2e4778b476418e455e5 SHA-1: 768dff9dddda1ab5ee32fda3efb67ca5a7508285 SHA-256: 5bd9542f670343f64bf35ae6a170b7699d04a04e6a2815cf5bb126d87a151303
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a website offering a 'free generator / game hack'. This is a common lure for phishing or malware distribution. The heuristic firings indicate the PDF links to known malicious redirector infrastructure, and the embedded URL is associated with this lure. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier clean score 0.0108

Heuristics 3

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/1330123889/pubg-uc-purchase-game-hack In PDF document text

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